expansion -coefficient of thermal expansion
handshaking
握手
交握
信号
联络
握
交接处理
信号交换
握手联络
交握协定
建立同步交换
中止-意外停机
接点泄漏
(The equation is abbreviated) expansion method
3-D thermal expansion coefficient
accelerated expansion of the universe
Address Expansion Scheme
adiabatic expansion cooling
adiabatic free expansion